Input validation error in dnsdist - CVE-2018-14663

Vulnerability identifier: #VU77909

CSH Severity: Low

CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-14663

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing DNS queries. A remote attacker can smuggle certain DNS records into the DNS backend and perform spoofing attack. This issue occurs only when either the ‘useClientSubnet’ or the experimental ‘addXPF’ parameters are used when declaring a new backend.

dnsdist
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Manager Proxy
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Linux Enterprise Micro
Fedora
SUSE Linux Enterprise Server 15 SP1 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
Basesystem Module
SUSE Package Hub 15
openSUSE Leap
dnsdist
dnsdist-debuginfo
dnsdist-debugsource
libluajit-5_1-2
luajit-debuginfo
libluajit-5_1-2-debuginfo
luajit-debugsource
libluajit-5_1-2-32bit-debuginfo
libluajit-5_1-2-32bit
luajit-devel
luajit

Install updates from vendor's website.

dnsdist - update to 1.3.3
dnsdist - addressed in versions 1.3.3-1.el7, 1.3.3-1.fc28, 1.3.3-1.fc29
dnsdist-debuginfo - addressed in versions 1.8.0-150100.3.5.1, 1.8.0-150400.9.3.1
dnsdist - addressed in versions 1.8.0-150100.3.5.1, 1.8.0-150400.9.3.1
dnsdist-debugsource - addressed in versions 1.8.0-150100.3.5.1, 1.8.0-150400.9.3.1
libluajit-5_1-2 - update to 2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1
luajit-debuginfo - update to 2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1
libluajit-5_1-2-debuginfo - update to 2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1
luajit-debugsource - update to 2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1
libluajit-5_1-2-32bit-debuginfo - update to 2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1
libluajit-5_1-2-32bit - update to 2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1
luajit-devel - update to 2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1
luajit - update to 2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663
• https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2018-08.html

• DNS records smuggling in PowerDNS DNSDist
• SUSE update for dnsdist
• SUSE update for dnsdist
• SUSE update for dnsdist
• Fedora 28 update for dnsdist
• Fedora 29 update for dnsdist
• Fedora EPEL 7 update for dnsdist